Solid-Fluid Coupled Numerical Analysis of Suction Caisson Installation in Sand

Suction caissons are widely used foundations in offshore engineering. The change excess pore pressure and seepage field caused by penetration suction significantly affects the soil resistance around caisson wall tip, also deformation of within adjacent to caisson. This study uses Arbitrary Lagrangian–Eulerian (ALE) large solid-fluid coupled FEM investigate changes during process installation sand. A nonlinear Drucker-Prager model is soil, while Coulomb friction applied at soil-caisson interface. ALE shown be able successfully simulate both jacked processes sand observed centrifuge tests. difference for found generated installation, highlighting importance using effective stress-based analysis consider evaluation penetration.